According to common sense, children's lively and active nature has led to a substantial increase in after-sales services for children's glasses. Problems such as crooked frames, damaged lenses, screws falling off, and nose pads needing to be replaced all require patience and care to seize the opportunity. Meanwhile, children grow up quickly and a high proportion of them need to replace their glasses within one or two years. Most parents do not have much time to go to hospitals or clinics for check-ups, which gives optical shops more opportunities. As professional knowledge and patient, even with detailed analysis and suggestions for parents, we believe that parents will go directly to an optical shop to try on glasses for their children next time, the chances would be increased definitely. However, as long as you build trust and loyalty to the children's glasses segment, you believe that the entire family will become your potential and regular customer base in the future. Therefore, in the long run, it is not just the market size for children’s glasses!